M50 Black-Ion [44mm]

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🛡️ M50 Mark III Tactical Watch – Military-Grade Timepiece for Everyday Use

Military-trusted. Civilian-ready. Uncompromising reliability.
The M50 Mark III Tactical Watch is the next-generation upgrade of our best-selling timepiece—engineered for elite military and first responders, now enhanced for everyday wear. Built to thrive in extreme conditions, the Mark III combines battlefield durability with sleek, understated style for off-duty life.

✅ New Hex Steel Bracelet – Our new “lightning” micro-adjust clasp for quick, on-the-go sizing and all-day comfort.

✅ Enhanced Super-LumiNova® Lume – Glows brighter, longer—for unmatched readability in low or no-light environments.

✅ Scratch-Resistant Sapphire Crystal – Ultra-clear, ultra-tough—resists scratches, scuffs, and impacts.

✅ Matte 316L Stainless Steel Case – Built with corrosion-resistant surgical-grade steel.

✅ 500M-Rated Movement – Delivers incredible reliability across millions of cycles.

🔋 LongLife™ Battery System (10 Years between battery changes)

Forget daily charging or constant battery swaps. The LongLife™ system gives you a decade of continuous power, so you can focus on the mission—not your watch.

(PRE ORDER) M50's Expected to Ship in August & September.

Movement Japanese, Quartz, Miyota 2S60
Dial Color Black
Screw-down crown
Water Resistance 500 / 1650
SKU: [sku]

Case Diameter 44mm
Case Height 14.5mm
Lug Width 22mm
Lug-to-Lug 52mm

Black-Ion Plated Stainless Steel
Sapphire Only

Movement Japanese, Quartz, Miyota 2S60
Dial Color Black
Screw-down crown
Water Resistance 500 / 1650
SKU: 015AACCBB-AB-C-AC-C-AC-AVMA-C-C-B

Case Diameter 44mm
Case Height 14.5mm
Lug Width 22mm
Lug-to-Lug 52mm

Black-Ion Plated Stainless Steel
Sapphire Only

The Dive Watch Used By Professionals

The M50 has 500M of water-resistance (yes, you read that right) and is used by various military and ERTs across North America. The M50 is made from 316L stainless steel case in matte black ion plating finish and comes standard with sapphire crystal.

Ultra-Legible Dial

High-contrast, luminous dials and large, clear numbers offer exceptional legibility, day or night. Read the time at a glance, without glasses.

WE DO THINGS OUR WAY.

St. Moritz Watch Corp. designs, assembles and services high quality sports watches under the MOMENTUM® brand. As life becomes more active and a more casual style becomes the norm, our straightforward designs, with outstanding waterproof performance and no-BS pricing, resonate more and more with active people everywhere.

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M50 Black-Ion [44mm]

(PRE ORDER) M50's Expected to Ship in August & September.

Add an Optional Engraving for M50 Black-Ion [44mm]

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